LEMON Manuals: Even more car manuals for everyone
Home >> Pontiac >> 2008 >> Grand Prix Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 64 (Object Detection) >> Diagnostic Information and Procedures >> Rear Parking Assist Malfunction >> Circuit/System Testing >> Notes

Circuit/System Testing: Notes

WARNING: This page is about a different car, the 2007 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.

Rear Vision System Always On

  1. Ignition OFF, disconnect the harness connector at the inside rear view mirror
  2. Ignition ON, vehicle in PARK, verify a test lamp does not illuminate between the control circuit terminal 9 and ground. ? If the test lamp illuminates, test the control circuit for a short to voltage. If the circuit test normal, refer to BACKUP LAMPS ALWAYS ON
  3. If all circuits test normal, replace the inside rear view mirror.

Rear Vision System Does Not Display

  1. Ignition OFF, disconnect the harness connector at the inside rearview mirror.
  2. Ignition ON, vehicle in PARK, verify that a test lamp illuminates between the ignition circuit terminal 13 and ground. ? If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.
  3. Verify that a test lamp illuminates between the ignition circuit terminal 13 and the ground circuit terminal 8. ? If the test lamp does not illuminate, test the ground circuit for an open/high resistance
  4. Park brake applied, transmission in reverse, verify that a test lamp illuminates between the control circuit terminal 9 and ground. ? If the test lamp does not illuminate, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the body control module (BCM).
  5. Ignition OFF, connect the harness connector at the inside rearview mirror. Disconnect the harness connector at the rear view camera.
  6. Park brake applied, transmission in reverse, verify a test lamp illuminates between the ignition circuit terminal C and ground. ? If the test lamp does not illuminate, test eh ignition circuit for a short to ground or an open/high resistance. If the circuit tests normal, test or replace the inside rearview mirror.
  7. Park brake applied, transmission in reverse, verify a test lamp illuminates between the ignitioin circuit temrinal C and the ground circuit terminal D. ? If the test lamp does not illuminate, test the ground circuit for an open/high resistance. If the circuit tests normal, test or repalce the inside rearview mirror.
  8. Ignition OFF, disconnect the harness connector at the inside rearview mirror.
  9. Ignition ON, test for less than 1 volt between the following signal circuit terminals and ground:
    • Video + circuit terminal 1
    • Video- circuit terminal 2

    10. If greater than the specified value, test the signal circuit for a short to voltage.

  10. Test for infinite resistance between the following signal circuit terminals and ground:
    • Video + circuit terminal 1
    • Video- circuit terminal 2
  11. Test for less than 2 ohms of resistance between the video + circuit terminal 1 at the inside rearview mirror and the video + circuit terminal A at the rear view camera. ? If greater than the specified range, test the video+ circuit for an open/high resistance.
  12. Test for less than 2 ohm of resistance between the video- circuit terminal 2 at the inside rearview mirror and the video- circuit terminal E at the rear view camera.
  13. If all circuits test normal, replace the rear view camera and test the system for proper operation. If the condition continues after replacement, replace the inside rearview mirror.
scientia non olet · About LEMON Manuals